PDF malware analysis — malicious · eabd13d318cba01f

MALICIOUS

PDF

4.9 KB Created: 2010-01-20 08:06:18 Authoring application: a49e86798096a8b82d

MD5: f794b67df9a865688fbf56efbab2c3a3 SHA-1: a4a9cb03177275e4ed72f1019a89d54790d85eec SHA-256: eabd13d318cba01f22c64b99b8e65158897ef75a56f73a2cf491368afc8070eb

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript. An extracted JavaScript file, 'legacy_pdfkit_stage_000.js', was identified as suspicious and detected by ClamAV as 'Js.Exploit.Shellcode-18', suggesting it is responsible for downloading and executing a secondary payload.

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `b4a6412c91a1b24805ffffae5d7bb96c13e9347eda96f24206475f885b40e86a`	pdf-javascript-stream	PDF /JS object 12 at offset 0x374	155 bytes
`javascript_obj0028_001.js` `3cd140d64b8add88067e9163c653d81d2bdccd1c7bc166985f3f952c6c5efd29`	pdf-javascript-stream	PDF /JS object 28 at offset 0x221	429 bytes
`legacy_pdfkit_stage_000.js` `35ee45bffa96e2b078074acc53b7051d845b0d707103908a916831b6cc09e9a5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x4C5	7222 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 15 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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